文章信息/Info

Title:

Research Progress in the Dispersion of Graphene Conductive Agents in Lithium-Ion Batteries

文章編號:

1674-3962(2022)03-0215-07

作者:

文芳1; 彭小坡2; 李爽1; 郭華超1; 黃國家1

（1．廣州特種承壓設(shè)備檢測研究院 國家石墨烯產(chǎn)品質(zhì)量監(jiān)督檢驗中心，廣東 廣州 510663）（2．廣州海關(guān)技術(shù)中心，廣東 廣州 510623）

Author(s):

WEN Fang1;  PENG Xiaopo2;  LI Shuang1;  GUO Huachao1;  HUANG Guojia1

(1．National Quality Supervision and Inspection Center of Graphene Product, Guangzhou Special Pressure Equipment Inspection and Research Institute, Guangzhou 510663,China) （2. Guangzhou Customs District Technology Center, Guangzhou 510623, China)

關(guān)鍵詞:

鋰離子電池; 石墨烯; 導(dǎo)電劑; 分散方法; 導(dǎo)電網(wǎng)絡(luò); 離子傳輸

Keywords:

lithium-ion battery;  graphene;  conductive additive;  dispersion method;  conductive network;  ion transmission

分類號:

TM912;TQ127.11

DOI:

10.7502/j.issn.1674-3962.202009011

文獻標(biāo)志碼:

A

摘要:

石墨烯具有柔性、二維、超薄的結(jié)構(gòu)特性，兼具電導(dǎo)率高、導(dǎo)熱性好、力學(xué)性能強及化學(xué)穩(wěn)定性良好等物理化學(xué)性質(zhì)，是一種極具潛力的鋰離子電池導(dǎo)電劑，石墨烯難以分散的問題是制約其在鋰離子電池中廣泛應(yīng)用的重要原因。結(jié)合石墨烯的結(jié)構(gòu)特征、衍生物種類及制備方法，從提升石墨烯的浸潤性、協(xié)同分散以及防止二次團聚等方面，綜述了石墨烯導(dǎo)電劑的分散方法，包括化學(xué)改性法、原位還原法、復(fù)合導(dǎo)電劑法、引入分散劑法以及其它方法，并對未來石墨烯導(dǎo)電劑的應(yīng)用趨勢及研究方向進行了展望。

Abstract:

Graphene has flexible, two-dimensional, ultra-thin structure characteristics, and physical and chemical properties such as high electrical conductivity, good thermal conductivity, strong mechanical properties and good chemical stability, which make it a promising conductive agent for lithium-ion batteries. The dispersion of graphene is the main factor restricting its wide application in lithium-ion batteries. In this paper, based on the structural characteristics, derivative types and preparation methods of graphene, the dispersion methods of graphene conductive agents are reviewed from the aspects of improving the wettability, synergistic dispersion and preventing secondary agglomeration of graphene, including chemical modification method, in-situ reduction method, composite conductive additive method, adding dispersant method and other methods. Finally, the application trend and research direction of graphene conductive agent in the future are prospected.